For those on here with a decent level of technical competence, given what you know of the general specs of these two new consoles, do you have any rough idea of the sort of material cost for the new MS/Sony consoles respectively?

Professional 'guesser' Pachter reckons $275 (approx £180) to build PS4 and $325 (approx £212) to build Xbone. Does that come close to sounding about right for the cost of components like the multiple GDDR5 in PS4 or Xbone innards(+Kinect-2.0) for MS?